Hong Kong Stock Movement: FOURSEMI's stock price surged by 17.29%, with clear capital flow. What caused such volatility in market sentiment?

Hong Kong Stock Movement FOURSEMI rose 17.29%. FOURSEMI rose 17.29%. There has been no significant news recently; trading is active, and capital flows are evident. Considering the sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation. no_news Stocks with High Trading Volume in the Industry SMIC rose 1.40%. Based on recent key news: On April 11, the U.S. Congress promoted the Multilateral Coordination Act on Hardware Technology Controls (MATCH), posing a threat to China's semiconductor industry. This act may limit the advanced chip manufacturing capabilities of companies like SMIC and prohibit U.S. engineers from providing support, leading to market concerns about SMIC's future development. Source: Investing.com The semiconductor industry faces policy pressure, increasing volatility. Huahong Semiconductor rose 2.24%. Based on recent news: On April 11, the U.S. Congress implemented the Multilateral Coordination Act on Hardware Technology Controls (MATCH), posing a threat to China's semiconductor industry. This act may limit China's advanced chip manufacturing capabilities, affecting Huahong Semiconductor's equipment maintenance and operations, leading to a rise in stock prices. Source: Investing.com On April 13, the industry shifted towards advanced packaging chiplet architecture, improving system-level yield. The cost advantages and yield improvements of chiplet architecture positively impact Huahong Semiconductor, driving up stock prices. Source: Investing.com The semiconductor industry is shifting to advanced packaging, with yield improvements. GigaDevice rose 8.53%. Based on recent news: On April 13, GigaDevice's subsidiary Qingyun Technology's customized storage solution project entered the customer sampling and small batch trial production stage, with mass production expected in 2026 to contribute revenue. Market expectations for the company's sustained high growth drove up stock prices. Kanjian Finance pointed out that the trend of domestic storage chip expansion is strong, and the market is optimistic about the company's performance growth, with a dynamic price-to-earnings ratio as high as 112 times. On April 13, despite GigaDevice's major shareholder reducing holdings, the market did not overreact, as the company's performance reached a historical high and the pace of realization accelerated. The trend of domestic high-end chip expansion is better than overseas, and the market holds an optimistic view on the performance growth of domestic storage chip companies. On April 13, against the backdrop of extremely high industry prosperity, leading companies in the storage industry continue to realize performance, with some companies achieving leapfrog growth. The market holds an optimistic view on GigaDevice's high valuation bubble, driving up stock prices. The storage industry is prosperous, and domestic expansion is strong. Stocks with High Market Capitalization in the Industry Lattice Semiconductor rose 0.94%, with a market capitalization of HKD 262.8 billion, and there has been no significant news recently. Trading is active, and capital flows are evident. Considering the sector and industry trends, the stock shows significant volatility, and the specific reasons need further observation